About 200 million years before, all the continents were part of vast land mass called Pangaea.

Too much water makes plants turning brown on the edges of their leaves.

Mary found it hard to concentrate on her work because noise

Ozone is unstable faintly bluish gas that is the most chemical active form of Oxygen.

Now I _    all day, so it doesn't matter.

The right to vote granted to women after only the adoption of 19th Amendment in 1920.

More 10,000 years ago, glaciers moved across the Minnesota region four time, leveling most of the land.

Chocolate is prepared by a complexity process of cleaning, blending and roasting cocoa beans, which must be ground and mixed sugar.

Many deaths associated with fires are not actual caused by the flames, but are rather result of asphyxiation resulting from the decreased oxygen supply in burning buildings .

Had we known traffic would be so bad, we did not drive back from work so early.

The teacher decided to fail the student with the grounds of his poor performance in tests and small progress.

You’re Cynthia, ____ you?   

Books and magazines ..................  around made his room very untidy.

Many theories on conserving the purity of water has been proposed but not one has been widely accepted as this one.

Visitors may realize that even though they can’t make their homes in Da Lat City, they can take away with memories of their beauty.

Any material that is attractive b magnet is by definition “magnetic”

Most types dolphins live at less twenty-five years, and some species may reach 50 years of age

The homes created by  legendary architect Frank Lloyd Wright are still viewed as uniquely, innovative, and valuable.

Country music songs are deeply personal and deal with themes of love, lonely, and separation

Near equator , the slant of the Sun’s rays is never great enough cause temperatures to fall below the freezing point.

The native people of Americans are called Indians because when Columbus landed in Bahamas in 1492, he thought that he has reached the East Indies